Coin detector



Feb. 7, 1928.

J. E. OLVIS COIN DETECTOR Filed Dec. 5, 1926 2 Shee ts-Sheet l INVENTOR.James 5 0/105 BY M 4 A TTORNEYS.

is obvious.

Patented Feb. 7, 1928. I

UNITED STATES PATENT v OFFICE.

JAMES E. OIJVIS, 0] LOS ANGELES, OALII'OBNIA.

COIN DETECTOR.

Application filed December 3, 1926. Serial No. 152,872.

This invention relates to a devicefor detecting spurious coins andseparating them from genuine'coins. More particularly, the.

The present invention has for its objects, first, the provision of adetector which has a coin chute communicating with a plurality of coinpassages, one for the exit from the detector of genuine coins; second,to provide a detector with metallic classifying means to direct coins,or checks having spurious metal or material to a rejection exit andthose having genuine metal toward the genuine exit; third, to provideadetector with perforated coin classifying means to separate and directto the proper exits coins with central holes and genuine coins; andfourth to provide a detector with a sizing classifier for coins ofgenuine dimensions and those of undersized dimensions.

The above mentioned objects together with other objects andcorresponding accomplishments are obtained by means of the embodiment ofmy invention illustrated in the ac; companying drawings, in which:

Fig. 1 is a front elevation of a detector; Fig. 2 is a side elevationthereof looking in the direction of arrow 2 of Fig. 1; Fig. 3 is asection of a fragment of the detector as seen on the line 3-3 of Fig. 1;Figs. 4 and 4 are sections of fragments as seen on the linescorrespondingly numbered in Fig. 3; Fig. 5 is a section showing afragment as seen on the line 5--5 of Fig. 2; Fig. 6 is a section of afragment as seen on the line 66 of Fig.2; Fig. 7 is a section as seen onthe line 7-7 of Fig. 1; Fig. 8 is a section of a fragment as seen uponthe line 88 of Fig. 7; and Fig. 9 is a section upon the line *99 of Fig.7.

Referring with more particularity to the drawing, a coin detector isshown which, it will be understood, ma be mechanically varied to adaptit to buil ing into a coin control mechanism such as a coin operatedmachine of the vending type. The device is built with a coin receivingopening through which coins are introduced into the detector. There areexits for spurious coins, the genuine coins passing to a selectedreceptor such as a coin control mechanism. It will be untoo large asize.

derstood that so'me spurious coins may have the qualities which willpermit their passage li-through the machine but these would berelatively small in number.

The detector as shown,jherein, comprises side plates 8 and 9 withinwhich a coin chute 10 is formed. The side plates are formed with aforward extension providing an entrance to the coin chute. Thisentranceindicated by 11 and is formed in the plate 9. It IS circular andof the same diameter as the genu;ne coin to be accepted. This will prevent the introduction of coinswhich are of The chute is otherwise closedto the introduction of coins except through the opening 11. Tofacilitate the introduction of the coins, an opening 12 is provided inthe plate 8, but of smaller size. Tins provides for finger manipulationof the coin. The coin chute 10 has a downwardly extending branch and atthe bottom thereof is a shelf 13 for the cointo strike upon and bounce.Above the shelf and toward the side, the coin chute is enlarged to forma dome indicated generally by 14. At the lower end of the shelf is anexit passage 15 leading downwardly and opening as indicated by 15 into aside chute 16 inclined downwardlyand extending the front of thedetector, it being for the purpose of guiding the rejected coins towarda rejected coin receptor therefor, such receptor not being shown. Inback of the shelf with its upper margin above the level thereof, is ahurdle 17. At the back of the hurdle is a guide 18 which directs coinsto a. branch chute 19 forming a continuation of the coin chute. lIheapparatus as described operates as folows:

A coin introduced through the opening 11 passes through the chute 10 anddrops upon the shelf 13 which is rigid. The coin, if of the proper metaland having the correct' resiliency will strike the shelf 13 and bounceleaping the hurdle l7 and passing into the chute 19 for furtherclassification. If the coin is not of the proper metal, it fails tovided a magnet 20 which is placed against the plate 9 and with its fieldso located that a coin must pass in dropping to the shelf 13. Obviously,an iron coin Will have its fall broken and will therefore not bouncesufliciently high to leap the hurdle, the shelf and hurdle together withthe branch passages form what has been termed a metalllc classifier.

Assumin that the coin has not been rejected byt e metallic classifier,it will pass downwardly through the branch chute 19. There is an exit 21in the side of the branch chute l9 and opening through the plate 8. Thebranch 19 has an exit extending downwardly below the opening 21, asindicated by 22, where it is directed forwardly and through the exit 15into chute 16. At the openin 21 there is a pawl comprising a bodypivotec? at 23 and having two fingers 24 and 25. The pawl is weighted asindicated by 26 and the fingers are so arranged that when balanced, thefinger 25 extends across the chute 19. This is in the path of the travelof a coin through the chute. Extending from a projection on plate 9 is astop 27 adapted to limit the movement of the pawl. A coin passingdownwardly will impinge upon the finger 25 and turn the pawl. Thiscauses the finger 24 to be projected into the slot and if the face ofthe coin is unperforated the finger 24 will push the coin outwardlthrough the opening 21. If there is a perBbration in the coin so as toadmit the finger 24, the latter passes into the perforation and permitsthe coin to drop downwardly into the space 22 so that it may passoutwardly into the rejected c in chute 16. Below the pawl so as toreceive coins passing through opening 21 is an offset guide chute 29.This chute is formed in a plate 28 and having a passage way therein asbest shown in Fig. 3. The passage way 29 receives the coins assingthrough opening 21 and directs them ownwardly to a sizing classifier.The sizing classifier is a channel providing a tilting chute 30. It ispivoted at 31, having an adjustable counter weight 32. The arrangementis such that the chute normally is in the position shown in the figureso as to be registered with the exit from chute 29, receiving therefromcoins assing through the chute. It may be tilted downwardly as bestshown in Fig. 3 to deliver coins into a' chute 33. The chute 33 isformed by an angle plate secured to the plate 8 and simply forms apassage way for the guidance of a coin therein downwardly and toward therear of the machine to a suitable receptor not shown for genuine coins.The upper wall of the tilting chute is formed by a spring finger 34secured at front end and having the free end bent as indicated by 35, topermit the ready entrance of coins issuing from slot 29 into the tiltingchute. The finger 34 is provided with a shoulder and lateral bevelindicated by 36 in Fig. 4. The arrangement is such that a coin of the roer thickness and diameter will lodge in tl ie orward end of the tiltingchute and will cause the latter to swing downwardly toward the bottom ofchute In its downward movement, the endof finger 34 strikes a projection37, springing the finger upwardly and permitting the release of the coincontained in the chute whereupon it is delivered to the chute 33. If thecoin is too thin, it will pass through one side of the linger, pass thebevel 36 and shoulder and the rear of the tilting chute and out exit 38.The same thing will happen it the coin is of too small a diameter.

It is obvious that I have provided a device which has a classifier toreject coins of a spurious metal. If the coin passes this classifiertoward the genuine coin receptor, it is again classified forperforations, and, if perforated, rejected. The next classification isthat of size.

What I claim is:

1. In a. device of the character described, a coin chute having an exita tiltable classifier channel normally aligned with the exit of the saidcoin chute, said channel having coin lodgement means to cause ropersized coins to lodge at the inlet end t ereof and then to tilt thechannel to deliver the lodged coin to a receptor for genuine coins, saidlodgement means permitting passage therethrough of undersized coins toa. re ection exit.

2. In a device of the character described, a coin chute having an exit,a tiltable classifier channel normally aligned with the exit of saidcoin chute, said channel havin coin lodgement means comprising a wall OIsaid channel arranged so as to engage the edge of a proper sized coin atthe inlet end of the classifier and cause the coin to lodge therein andthen to tilt the channel to deliver the lodged coin to a receptor forgenuine coin-s, said lodgement means permitting passage through saidclassifier of undersized coins to a rejection exit.

3. In a device of the character described, a coin chute having an exit,a tiltable classifier channel normally aligned with the exit of saidcoin chute, said channel having coin lodgment means comprising a wall ofsaid channel yieldably secured thereto so as to engage the edge of aproper sized coin at the inlet end of the channel and cause the coin tolodge therein and then to tilt or to permit undersized coins to passtherethrough to a rejection exit and means to press said yieldable walloutwardly upon the channel tilting downwardly so as to release thelodged coin to a receptor.

4. In a device of the class described, a coin chute having an exit, atiltable classifier channel normally aligned with the exit of said coinchute, said channel having a coin lodgment means comprising a wall ofsaid channel formed by a cantilever leaf spring free at the inlet end ofsaid chute so as to permit the passage therethrough of undersized coinsto a rejection exit or to engage the edge of a proper sized coin andcause it to lodge at the inlet end, then to tilt downwardly, and anabutment to retract said spring and release the lodged coin for deliveryto a receptor.

5. In a device of the class described, a coin chute having an exit, atilt-able classifier channel normally aligned with said exit, saidchannel having coin lodgement means comprising a wall of said channelformed by a cantilever spring having an inner laterally beveled face,said spring being free at the inlet end of said channel and arranged topermit the passage therethrough of undersized coins or to engage theedge of a proper sized coin and cause it to lodge at the inlet end, thento tilt downwardly, and an abutment to retract said spring upon channeltilting downwardly and thereby to release the lodged coin and deliver itto a receptor.

6. In a device of the character described, a coin chute having an exit,a tiltable classifier channel, said channel having means to arrest thepassage therethrough of proper size coins and to permit the passagetherethrough of undersized coins to a rejection exit, said channel beingaotuable by arrested coins todeliver the latter to a receptor.

7 In a device of the class described, a coin chute having an exit, atiltable classifier channel. normally aligned with the exit of saidchute and having means to arrest the passage therethrough of propersized coins and to permit the passage therethrough of undersized coinsto a rejection exit, said channel being movable by the gravitative forceof arrested coins to tilt and deliver the latter to a receptor.

In witness that I claim the foregoing I have hereunto subscribed my namethis 26th day of November, 1926.

JAMES E. OLVIS.

